<template>
  <div>
    <h1 v-text="str"></h1>
    <h1 v-html="str"></h1>
    <h1 v-html="str">{{ 10 + 20 }}</h1>
  </div>
</template>

<script>
export default {
  data() {
    return {
      str: "<span>What's the difference?</span>",
    };
  },
};
</script>

<style>
</style>